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Trigger Reestablishment via resetting RLC sequence numbers

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Plugin can trigger reestablishment (on DU)
and show counters of reestablishment (on CU)
This commit is contained in:
Robert Schmidt
2023-08-12 11:48:17 +02:00
parent 1c07afbeb6
commit b90a59a671
5 changed files with 54 additions and 29 deletions
Download Patch File Download Diff File Expand all files Collapse all files
common/utils/telnetsrv/telnetsrv_ci.c
+27 -23
View File
@@ -28,15 +28,17 @@
#include <stdarg.h>
#include "openair2/RRC/NR/rrc_gNB_UE_context.h"
#include "openair2/LAYER2/nr_rlc/nr_rlc_oai_api.h"
#include "openair2/LAYER2/NR_MAC_gNB/nr_mac_gNB.h"
#include "openair2/LAYER2/nr_rlc/nr_rlc_oai_api.h"
#include "openair2/LAYER2/nr_rlc/nr_rlc_ue_manager.h"
#include "openair2/LAYER2/nr_rlc/nr_rlc_entity_am.h"
#define TELNETSERVERCODE
#include "telnetsrv.h"
#define ERROR_MSG_RET(mSG, aRGS...) do { prnt(mSG, ##aRGS); return 1; } while (0)
static int get_single_ue_rnti(void)
static int get_single_ue_rnti_mac(void)
{
NR_UE_info_t *ue = NULL;
UE_iterator(RC.nrmac[0]->UE_info.list, it) {
@@ -48,11 +50,6 @@ static int get_single_ue_rnti(void)
if (!ue)
return -1;
// verify it exists in RRC as well
rrc_gNB_ue_context_t *rrcue = rrc_gNB_get_ue_context_by_rnti(RC.nrrrc[0], ue->rnti);
if (!rrcue)
return -1;
return ue->rnti;
}
@@ -61,7 +58,7 @@ int get_single_rnti(char *buf, int debug, telnet_printfunc_t prnt)
if (buf)
ERROR_MSG_RET("no parameter allowed\n");
int rnti = get_single_ue_rnti();
int rnti = get_single_ue_rnti_mac();
if (rnti < 1)
ERROR_MSG_RET("different number of UEs\n");
@@ -71,23 +68,32 @@ int get_single_rnti(char *buf, int debug, telnet_printfunc_t prnt)
int get_reestab_count(char *buf, int debug, telnet_printfunc_t prnt)
{
if (!RC.nrrrc)
ERROR_MSG_RET("no RRC present, cannot list counts\n");
rrc_gNB_ue_context_t *ue = NULL;
int rnti = -1;
if (!buf) {
rnti = get_single_ue_rnti();
if (rnti < 1)
ERROR_MSG_RET("no UE found\n");
rrc_gNB_ue_context_t *l = NULL;
int n = 0;
RB_FOREACH(l, rrc_nr_ue_tree_s, &RC.nrrrc[0]->rrc_ue_head) {
if (ue == NULL) ue = l;
n++;
}
if (!ue)
ERROR_MSG_RET("could not find any UE in RRC\n");
if (n > 1)
ERROR_MSG_RET("more than one UE in RRC present\n");
} else {
rnti = strtol(buf, NULL, 16);
if (rnti < 1 || rnti >= 0xfffe)
ERROR_MSG_RET("RNTI needs to be [1,0xfffe]\n");
ue = rrc_gNB_get_ue_context_by_rnti(RC.nrrrc[0], rnti);
if (!ue)
ERROR_MSG_RET("could not find UE with RNTI %04x in RRC\n");
}
rrc_gNB_ue_context_t *ue = rrc_gNB_get_ue_context_by_rnti(RC.nrrrc[0], rnti);
if (!ue)
ERROR_MSG_RET("could not find UE with RNTI %04x\n", rnti);
prnt("UE RNTI %04x reestab %d reconf_after_reestab %d\n",
rnti,
ue->ue_context.rnti,
ue->ue_context.ue_reestablishment_counter,
ue->ue_context.ue_reconfiguration_after_reestablishment_counter);
return 0;
@@ -95,9 +101,11 @@ int get_reestab_count(char *buf, int debug, telnet_printfunc_t prnt)
int trigger_reestab(char *buf, int debug, telnet_printfunc_t prnt)
{
if (!RC.nrmac)
ERROR_MSG_RET("no MAC/RLC present, cannot trigger reestablishment\n");
int rnti = -1;
if (!buf) {
rnti = get_single_ue_rnti();
rnti = get_single_ue_rnti_mac();
if (rnti < 1)
ERROR_MSG_RET("no UE found\n");
} else {
@@ -106,13 +114,9 @@ int trigger_reestab(char *buf, int debug, telnet_printfunc_t prnt)
ERROR_MSG_RET("RNTI needs to be [1,0xfffe]\n");
}
// verify it exists in RRC as well
rrc_gNB_ue_context_t *rrcue = rrc_gNB_get_ue_context_by_rnti(RC.nrrrc[0], rnti);
if (!rrcue)
ERROR_MSG_RET("could not find UE with RNTI %04x\n", rnti);
nr_rlc_test_trigger_reestablishment(rnti);
nr_rlc_remove_ue(rnti);
prnt("force-remove UE RNTI %04x from RLC to trigger reestablishment\n", rnti);
prnt("Reset RLC counters of UE RNTI %04x to trigger reestablishment\n", rnti);
return 0;
}